We have been trying to answer the driving questions Why Do I Look The Way I Do? as it relates to individuals within a species, an entire species, and the environment. Using what you have learned about genetics, inheritance patterns, Punnett squares, and pedigrees, how would you answer the driving question at this point? What questions do you still have?
Then, comment on at least TWO posts in this thread. When you comment try to keep the conversation going by asking a question or saying something that makes others want to respond to you.
I look the way I do because of natural selection and inheritance. Natural selection is based on the principle that only the strong survive. A long time ago being short would be a bad thing because short people would be killed easier. Naturally only the taller people were able to mate. After this process repeating many times humans now are taller than human two hundred years ago. The reason my hair is brown, something that doesn’t affect my survival, is because my parents had brown hair so I have the brown hair gene. This is how I get small differences is my body.
What prevents humans from getting VERY tall because of natural selection? Is there a limit?
People start dying because of their height. Now there is much less natural selection because many people survive. Taller people might find mate more easily than shorter people, but the ratio of tall people who mate to short people who mate are close to even.
Hight in some ways is a bad trait. It’s like asking why doesn’t have toenails make you more likely to survive. It just doesn’t.
Why did natural selection stop?
Natural selection hasn’t stopped. If you look at the tallest person from before 1917 they are most likely shorter than the tallest person before 2017.
Thank you.
Natural selection hasn’t stopped. It’s just a very slow process.
I look the way I do because because of the genes of my parents and my ancestors before me. The traits of my ancestors were passed down to me through heredity. My mom had certain alleles that made up her genotype, same with my dad. When the genes crossed they created different a genotype for me based on dominant and recessive. The dominant trait overpowers the recessive, that is why you often see dominant traits in families more than recessive traits. One question I still have is, Is there a part of us that we can inherent that is totally unrelated to our ancestors? A trait that is created?
If dominant is seen in much more families, why are there so many families with only Albino people in them and no non-Albino people?
Great vocab!
To get a recessive trait you need to have 2 recessive alleles.
Great use of vocab terms!
There are aquired traits (traits that don’t come from our ancestors.)
Geat Job! Sometimes, genetic mutations create new traits in offspring that parents didn’t have. If that trait proves useful, the offspring that have it are more likely to survive to adulthood and pass the trait on.
I look the way I do because most of my ancestors have the same traits I do. My trait are passed down through heredity. This means that the traits my parents have are likely to be passed down to me. one example is that both my parents have brown hair, so the trait of brown hair would be a lot more likely for me than blonde hair. The trait of brown hair that runs in my family is most likely dominant, because everyone in my family has brown hair.
One question I still have, is, is it possible for two traits to be neither dominant or recessive, and the trait is passed down with a 50/50 chance of it being one color?
If a trait were neither dominant nor recessive, what would it be categorized as? Were you thinking of a specific example?
I do not think it is possible I think a trait can either both alleles be dominant/incomplete dominant but I do not know how you would categorize something if it was not dominant or recessive. That’s a great question.
I think the trait would have it’s own description, but we haven’t learned about it yet. Either that or it’s not possible. I was not thinking of a specific example, but the idea of a trait being neither dominant or recessive could go with any trait.
Your reply to the question should be on the other question, not this one.
I think I look the way I do because of the genes that my parents have/carry. The traits were passed down from my parents to me by a process called heredity.
For example, red hair is a recessive gene. My dad is the redhead, however, my mom had to be a carrier for it in order for me to inherit that hair color. There had to have been two recessive alleles because if there weren’t, the one dominant allele would have overpowered it, given me a different hair color.
I like the way you showed the example for your own family.
One question I still have is, are their traits that are neither inherited or acquired? Is there a third separate “category?”
I also wonder whether if there is a third category? Good question.
I wonder how many categories could there be? could there be more than 4?
I like the way you showed the example for your own family.
I love this question because it opens a whole new door of questions about genetics.
We look the way we do because most of our traits are given to us by our parents and grandparents. This is called heredity the passing of a trait from different generations I think most traits that everyone has are from autosomal dominance/recessive. I feel that most traits do not have to do with the gender of someone. But some traits do have to do with gender like some diseases. Some diseases only women can have and some only males can have.
How are traits made?
How do traits determine whether they only affect males and some only females?
I also wounder how traits determine whether they only affect males and some only females?
Why do you think most traits are autosomal rather than X-Linked?
Now that I think about it more, I think that it depends on the specific trait in telling whether a trait is x linked or autosomal. Some traits are related to the sex and some are not. I am not quite sure whether x linked or autosomal have more, I just thought that based on some of our experiments that they were more autosomal traits then x linked traits.
Humans have 22 non-sex linked chromosomes and only 1 sex-linked chromosome.
I look the way I do because I have the some of the same traits as my parents that was passed down to me through their genes. As an example my dad has brown eyes and my mom has green eyes since brown eyes is dominant I have brown eyes and so do both of my sisters. This trait was passed down from my dad. The passing of traits from one generation to the next is heredity.
Are more traits being discovered?
I look the way I do because I receive traits through different heredity patterns such as autosomal dominant, autosomal recessive, X linked, etc… I inherit traits, as well as acquire them. One example of an inherited trait of mine is my skin. I was born this way and I can change it. An example of an acquired trait is my personality because I have different influence and interests than other people.
My question is; if 2 identical twins were separated and raised in different environments, would they look different from each other?
I think personality is a queer trait to discuss because it changes so easily. Is there another acquired trait that you have?
Another acquired trait I have is how straight my teeth are because I have braces
I like your response, but this doesn’t answer the question at the top.
I look the way I do because I am equal parts of my mom and my dad. Some traits of theirs are dominant over others so I’m not quite exactly equal though. For example, my dad can roll his tongue but my mom can’t. Instead of me being able to half roll my tongue, I can fully roll my tongue. Some traits are acquired such as the bug bites on my leg from being bitten.
Continued: A question I still have is if I am a carrier for any disease.
You could make a family tree about diseases and see if you could be affected, a carrier, unaffected.
That’s a good idea! But how would I know the mode of inheritance for the diseases? And what about diseases that haven’t surfaced?
I think I look the way I do because when my parents passed there traits down to there kids. There is always a mix of both the parents in the child. An example is, I got my dads hazel eyes and my moms long hair. My Grandpa also had green eyes so my mom was a carrier of green eyes and my dad had hazel eyes and hazel is incomplete dominance.
Watch your spelling. I like how you talked about three generations in your family instead of just you and your parents. Are hazel eyes incomplete dominance or is it its own color? First sentence is sentence fragment.
Sorry about the spelling and grammar I will check over it again and repost. I looked it up hazel is incomplete dominance because it is a mix of green and brown.
I look the way I do because the traits I have were passed down. My brothers and I all have brown eyes like my dad but my mom has blue eyes. This means that brown was most likely dominant over blue which is why this happened. There are other things too, though, like how I have freckles like my mom.
How are those traits passed down?
autosomal dominant
I like the example you used with your mom and your dad, what are some traits that you acquired?
My answer to the question “Why do I look the way I do?” would be that you look the way you do because of acquired traits that you gain in life as well as inherited traits that you got from your parents and might pas down to your children. I can’t think of any other questions I have about genetics.
If you don’t have any other questions, do you think you know everything about genetics?
I think I look the way I do because I have genetics from my Mom and my Dad I also have Genetics from my Grandpa And my Grandma from both sides. My Great Grandfather had blue eyes and blue eyes are recessive in my family so it skipped a generation. Me my brother and three of my cousins one my mom’s two on my dad’s side have blue eyes. That is just eyes though there are many other components to trait as well.
Do you mean traits, or genetics?
I look the way I do from the my ancestors carried the traits throughout the generations and I have inherited some of them for example my my nose looks like my parents and both my parents have needed glasses and so did my brothers and me.
I think you may put this in the wrong post